Chalcedonite powders

Chalcedonite powders

Chalcedonite powders are produced by grinding selected, top-quality raw material. The chalcedonite we mine and process is free of contamination by iron compounds. The special properties of the raw material make our powders an excellent filler for plastics, resins and paints.

Chalcedonite powders are also used as an additive for concrete, improving its strength and eliminating alkaline corrosion. Our product range includes Chalcedonite powders in thicknesses of 5, 10, 20 and 36 µm.

Available fractions:

Data sheets for all fractions issued on request.

Powder with a granulation of 0-250 µm:

Chalcedonite powder M10:

The product is packed in big bags.

Specific density 2,60 g/cm3
Bulk density 0,45 – 0,55 g/cm3
Stressed density 0,60 – 0,65 g/cm3
Loss on roasting LOI (1h 950°C) 1,37 %
Fire resistance PN-EN993-12sP 173 (1730°C)
Granulation D-95 ≤ 10 μm
Granulation D-50 ≤ 10 μm
Optical characteristics L/a/b 84,16/0,95/4,57
Oil absorbing capacity 36 g/100 g
Water absorbing capacity 30 g/100 g
SBET (m2/g) Vpores (cm2/g) rpores (nm)
8,51 0,048 1,09
  • SBET (m2/g) – specific surface area calculated from the BET equation
  • Vpores (cm2/g) – total pore volume
  • rpores (nm) – average pore radius